package miracle.joker.design.command.demo1;

public class TV {
    public void on() {
        System.out.println("TV is on");
    }

    public void off() {
        System.out.println("TV is off");
    }

    public void volumeUp() {
        System.out.println("TV volume is increased");
    }

    public void volumeDown() {
        System.out.println("TV volume is decreased");
    }
}

